When determining what others know, we intuitively consider not only whether they succeed but also their probability of success in the absence of knowledge (e.g., random guessing). Across three experiments (n = 240 North American 4-6-year-olds, data collected between 2020-2023) we find that 4-year-olds understand that tasks with a lower probability…

Unlike adults, young children think that many weird and unlikely events are impossible. Existing theories have argued that this developmental shift is driven primarily by age-related changes in knowledge as well as an increasing ability to reflect on one's modal intuitions. However, this intuition + reflection model fails to explain…

The standard view on Theory of Mind (ToM) is that the mastery of the false belief (FB) task around age 4 marks the ontogenetic emergence of full-fledged meta-representational ToM. Recently, a puzzling finding has emerged: Once children master the FB task, they begin to fail true belief (TB) control tasks. This finding threatens the validity of FB…

Children often say that possible events are impossible, and only gradually come to see these events as possible. For instance, they often deny that people could do unusual things, like own a pet peacock, or immoral things, like stealing or lying. These possibility denials are surprising. For instance, children have first-hand experience with the…

The notion of children's working theories is an overarching outcome of Aotearoa New Zealand's early childhood curriculum document "Te Whariki." An ever-growing base of research and literature is available about the working theories children hold and ways that teachers might support working theory development. In this article, I draw on…

Background: Low socioeconomic status is associated with lower cognitive performance and long-term disparities in achievement and success. However, not all children from low-income backgrounds exhibit lower cognitive performance. Characterizing the factors that promote such resilience in youth from low-income households is of crucial importance.…

Previous research on children's knowledge about the mind has primarily focused on their comprehension of false beliefs, leaving the conceptualization of thoughts and thinking less explored. To address this gap, we developed a new assessment tool, the interview about the mind (IaM), to assess children's understanding of the mind. Two studies…

Theory of mind (ToM) is the ability to attribute mental states and feelings to others, and to understand that those mental states and feelings affect their behaviour. It is one of three core developmental tasks for children in preschool years, along with emotion self-regulation and relationships with parents and family members. Given there are…

Multidimensional theory of mind assessments should include items assessing both explicit theory of mind (theory of mind knowledge) and applied theory of mind (application of theory of mind knowledge in real-life contexts). However, the two theory of mind scores cannot be interpreted collectively to identify children having mismatched explicit and…

Behavioral research demonstrates a critical transition in preschooler's mental-state understanding (i.e., theory of mind; ToM), revealed most starkly in performance on tasks about a character's false belief (e.g., about an object's location). Questions remain regarding the neural and cognitive processes differentiating children who pass versus…

Digitalization can potentially benefit the creative and cognitive development of children. This study aims to analyze this impact on a sample of preschool children. A total of 80 preschoolers were divided into four groups based on their age and program variables: there were two groups (control and training) of children aged 3 to 4 years and two…

Objective: This study aimed to investigate the characteristics of auditory processing (AP) in preschool children with attention-deficit/hyperactivity disorder (ADHD) using the speech auditory brainstem response (speech-ABR), which provides insights into the AP of speech signals in the central auditory nervous system (CANS). Method: A total of 84…

Children have a robust social preference for people similar to them, like those who share their language, accent, and race. In the present research, we show that this preference can diminish when children consider who they want to learn about. Across three experiments, 4- to 6-year-olds (total N = 160; 74 female, 86 male, from the Waterloo region…

Previous research suggests that book reading and screen time have contrasting effects on language and brain development. However, few studies have explicitly investigated whether children's brains function differently during these two activities. The present study used functional near-infrared spectroscopy (fNIRS) to measure brain response in 28…

The host of the internationally popular early childhood podcast "That Early Childhood Nerd" provides a framework for understanding the importance of free play. Free play is disappearing from the lives of too many young children, leaving them vulnerable to negative effects on their physical and mental health, social and emotional growth,…